Vol. 11, Issue 10, 1699-1705, October 2001
LETTER
Partial Deletion of the Bovine ED1 Gene Causes Anhidrotic Ectodermal Dysplasia in Cattle
Cord
Drögemüller,
Ottmar
Distl, and
Tosso
Leeb1
Institute of Animal Breeding and Genetics, School of Veterinary
Medicine Hannover, 30559 Hannover, Germany
Anhidrotic ectodermal dysplasia (ED1) is characterized by
hypotrichosis, reduced number of sweat glands, and incisior anodontia in human, mouse, and cattle. In affected humans and mice, mutations in
the ED1 gene coding for ectodysplasin 1 are found.
Ectodysplasin 1 is a novel trimeric transmembrane protein with an
extracellular TNF-like signaling domain that is believed to be involved
in the formation of hair follicles and tooth buds during fetal
development. We report the construction of a 480-kb BAC contig
harboring the complete bovine ED1 gene on BTA Xq22-Xq24.
Physical mapping and sequence analysis of the coding parts of the
ED1 gene revealed that a large genomic region including exon
3 of the ED1 gene is deleted in cattle with anhidrotic
ectodermal dysplasia in a family of German Holstein cattle with three
affected maternal half sibs.
[The sequence data described
in this paper have been submitted to the EMBL nucleotide database under
accession nos. AJ300468, AJ300469, and AJ278907.]
1
Corresponding author.
11:1699-1705 ©2001 by Cold Spring Harbor Laboratory Press ISSN 1088-9051/01 $5.00